Altra Performance Half Zip NWOT

Fiber Content: Body: Proprietary ZeroLite™; Mesh: 82% Nylon, 18% Spandex 360º Reflective Trim Packs into Chest Pocket ** Exceptionally light and convenient, the award-winning Altra Performance Half Zip offers supreme protection from the elements. mesh venting, welded zippers, and bonded thumbholes bring you comfort in all climates and conditions. And a cutting edge 4-way stretch makes it as flexible as a second skin.